AT24C64D-XHM-T Datasheet, PDF (1/27 Pages) ATMEL Corporation – 2-Wire Serial Electrically Erasable and Programmable Read-only Memory

Features
• Low-voltage and Standard-voltage Operation
– V_CC = 1.7 to 5.5V
• Internally Organized 4096 x 8, 8192 x 8
• 2-Wire Serial Interface
• Schmitt Trigger, Filtered Inputs for Noise Suppression
• Bi-directional Data Transfer Protocol
• 1MHz (5.0V) and 400KHz (1.8V Compatibility)
• Write Protect Pin for Hardware Data Protection
• 32-Byte Page Write Mode (Partial Page Writes Allowed)
• Self-Timed Write Cycle (5ms max)
• High Reliability
– Endurance: 1 Million Write Cycles
– Data Retention: 100 Years
• Lead-free/Halogen-free Devices
• 8-lead JEDEC SOIC, 8-lead TSSOP, 8-lead UDFN, 8-lead XDFN, 5-lead SOT23
and 8-ball VFBGA
• Die Sales: Wafer Form, Waffle Pack and Bumped Wafers
Description
The Atmel^® AT24C32D/64D provides 32,768-/65,536-bits of serial electrically eras-
able and programmable read only memory (EEPROM) organized as 4096/8192 words
of 8-bits each. The device’s cascadable feature allows up to eight devices to share a
common 2-wire bus. The device is optimized for use in many industrial and commer-
cial applications where low power and low voltage operation are essential. The
AT24C32D/64D is available in space saving 8-lead JEDEC SOIC, 8-lead TSSOP, 8-
lead UDFN, 8-lead XDFN, 5-lead SOT23 and 8-ball VFBGA and is accessed via a 2-
wire serial interface. In addition, the entire family operates from 1.7V to 5.5V.
Table 0-1. Pin Configurations
Pin Name
A0 - A2
SDA
SCL
WP
Function
Address Inputs
Serial Data
Serial Clock Input
Write Protect
Note:
For use of 5-lead SOT23,
the software A2, A1, and A0
bits in the device address
word must be set to zero to
properly communicate
8-lead SOIC
A0 1
A1 2
A2 3
GND 4
8
VCC
7 WP
6 SCL
5 SDA
8-lead UDFN
VCC 8
WP 7
SCL 6
SDA 5
1 A0
2 A1
3 A2
4 GND
Bottom View
5-lead SOT23
SCL 1
5 WP
GND 2
SDA 3
4
V_CC
8-lead TSSOP
A0 1
A1 2
A2 3
GND 4
8 V_CC
7 WP
6 SCL
5 SDA
8-lead XDFN
V_CC 8
WP 7
SCL 6
SDA 5
1 A0
2 A1
3 A2
4 GND
Bottom View
8-ball VFBGA
V_CC 8
WP 7
SCL 6
SDA 5
1 A0
2 A1
3 A2
4 GND
Bottom View
2-Wire Serial
Electrically
Erasable and
Programmable
Read-only
Memory
32K (4096 x 8)
64K (8192 x 8)
Atmel AT24C32D
Atmel AT24C64D
2-Wire, 32K
Serial E²PROM
8717B–SEEPR–6/10